Question: In a study looking at the correlation between annual income and cholesterol level, one concern was that the age of the participants might be a

In a study looking at the correlation between annual income and cholesterol level, one concern was that the age of the participants might be a confounder because both income and cholesterol generally increase with age. Which of the following correlation methods could the researchers use to remove the influence of age on the correlation between income and cholesterol level? Question 5Select one: a. Partial correlation b. Point-Biserial c. Kendall's Tau d. Spearman correlation coefficient

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